Apple today has seeded its fourth beta of iOS 10.3 to developers. iOS 10.3 includes new features such as support for Apple’s new file system (APFS) with other bug fixes and stability improvements.
iOS 10.3 beta 4 is now available for download via Apple’s Developer Center. The beta is currently available for developers only, with a public beta coming out within the next few days.
It is highly unrecommended to run this beta on your daily driver. However, if you find anything new let us know in the comments below!